Well, of course, the seed of this story began with Aliens of London and the way Jackie reacted to Rose being missing right at the start of the adventures. It raised a question that I had in the back of my mind about what ordinary people would think about the TARDIS parked up there by the flats on a regular basis. What would happen if The Doctor’s world met the real world in such a way? If there was a crisis in the Powell Street flats of that kind – a missing child – the stranger in their midst might be suspected. The Doctor’s innocent habit of watching the stars from the roof of the high rise might be seen as something voyeuristic. The fact that he played with the children in the yard might be misconstrued. And even decent people can turn into an angry mob if their buttons are pushed.

Being Doctor Who there was a limit to how much could be said about what was happening to the boy. And there was a happy ending. All too often in the news we see these kind of things end in tragedy. If this was fan fiction for Cracker or Inspector Frost or Taggart, or CSI, then most likely the ending would have been darker. In Doctor Who, at least, we are allowed happy endings, and that is what makes them nice to write, even though it is possible to touch on hard issues like this one.

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